Search Publications
High-precision stellar abundances of the elements: methods and applications
Nissen, Poul Erik; Gustafsson, Bengt
Efficient spectrographs at large telescopes have made it possible to obtain high-resolution spectra of stars with high signal-to-noise ratio and advances in model atmosphere analyses have enabled estimates of high-precision differential abundances of the elements from these spectra, i.e. with errors in the range 0.01-0.03 dex for F, G, and K stars…
Major achievements of the Rosetta mission in connection with the origin of the solar system
Barucci, M. A.; Fulchignoni, M.
Comets have been studied from a long time and are believed to preserve pristine materials, so they are fundamental to understand the origin of the solar system and life. Starting in the early 1990s, ESA decided to have a more risky and fantastic mission to a comet. As Planetary Cornerstone mission of the ESA Horizon 2000 program, the Rosetta missi…
The realm of the galaxy protoclusters. A review
Overzier, Roderik A.
The study of galaxy protoclusters is beginning to fill in unknown details of the important phase of the assembly of clusters and cluster galaxies. This review describes the current status of this field and highlights promising recent findings related to galaxy formation in the densest regions of the early universe. We discuss the main search techn…
The faint radio sky: radio astronomy becomes mainstream
Padovani, Paolo
Radio astronomy has changed. For years it studied relatively rare sources, which emit mostly non-thermal radiation across the entire electromagnetic spectrum, I.e. radio quasars and radio galaxies. Now, it is reaching such faint flux densities that it detects mainly star-forming galaxies and the more common radio-quiet active galactic nuclei. Thes…
Radio AGN in the local universe: unification, triggering and evolution
Tadhunter, Clive
Associated with one of the most important forms of active galactic nucleus (AGN) feedback, and showing a strong preference for giant elliptical host galaxies, radio AGN (L_{1.4 GHz} > 10^{24} W Hz^{-1}) are a key sub-class of the overall AGN population. Recently their study has benefitted dramatically from the availability of high-quality data …
GG Tau: the ringworld and beyond. Mass accretion and planetary formation in young multiple stellar systems
Dutrey, Anne; Di Folco, Emmanuel; Beck, Tracy +1 more
In binary stellar systems, exoplanet searches have revealed planetary mass companions orbiting both in circumstellar and in circumbinary orbits. Modelling studies suggest increased dynamical complexity around the young stars that form such systems. Circumstellar and circumbinary disks likely exhibit different physical conditions for planet formati…
High-mass X-ray binaries in the Milky Way. A closer look with INTEGRAL
Tsygankov, Sergey S.; Lutovinov, Alexander A.; Walter, Roland +1 more
High-mass X-ray binaries are fundamental in the study of stellar evolution, nucleosynthesis, structure and evolution of galaxies and accretion processes. Hard X-rays observations by INTEGRAL and Swift have broadened significantly our understanding in particular for the super-giant systems in the Milky Way, whose number has increased by almost a fa…
The legacy of Venus Express: highlights from the first European planetary mission to Venus
Drossart, Pierre; Montmessin, Franck
The ESA/Venus Express mission spent more than 8 years in orbit around Venus to extensively study its atmosphere, ionosphere and plasma environment and unveil new aspects of its surface. Extensive reviews of the work of Venus Express are underway, to cover in-depth studies of the new face of Venus revealed by Venus Express and ground-based concurre…
The magnetic field in the solar atmosphere
Solanki, Sami K.; Wiegelmann, Thomas; Thalmann, Julia K.
This publication provides an overview of magnetic fields in the solar atmosphere with the focus lying on the corona. The solar magnetic field couples the solar interior with the visible surface of the Sun and with its atmosphere. It is also responsible for all solar activity in its numerous manifestations. Thus, dynamic phenomena such as coronal m…
Giant magnetospheres in our solar system: Jupiter and Saturn compared
Krupp, Norbert